JAVA-2107: Optimize DefaultDBCallback.objectDone by only looking to see if the BSONObject should be replaced by a DBRef if it's not an instance of BasicBSONList
JAVA-2107: Optimize DefaultDBCallback.objectDone by only looking to see if the BSONObject should be replaced by a DBRef if it's not an instance of BasicBSONList

jsonking/mongo-java-driver,jyemin/mongo-java-driver,rozza/mongo-java-driver,jyemin/mongo-java-driver,jsonking/mongo-java-driver,rozza/mongo-java-driver